I would just love it if I could talk to the other squad while being a officer. It would make things a lot easier and less annoying for the commander having to be a human postal office.
I know I could type to them in game chat but there is a lot of scenarios were they can't type to other squads like in a firefight or flying in mid air.

try mumble, its a positional voice program, some people love it, some hate it.

I love it, it allows me to call out a contact and all the dudes on mumble near me will hear me, if I need to tell my driver where to go with voice, I can, pilots etc etc. SL leader meetings on mumble are pretty useful as you can discuss your tactics etc without using a TS style coms net which everyone can hear.

Its a good program, takes a bitof getting used to. But I can't play without it anymore.